lc74761m Sanyo Semiconductor Corporation, lc74761m Datasheet - Page 12

• Manufacturer Part Number: lc74761m
• Description: On-screen Display Lsi
• Manufacturer: Sanyo Semiconductor Corporation

Second byte
Note: When the chip is reset by the RST pin, the register states (bits) are all cleared to 0.
8 COMMAND70: Display Control Setting Command 4
First byte
Second byte
Note: When the chip is reset by the RST pin, the register states (bits) are all cleared to 0.
DA0 to DA7
DA0 to DA7
DA0 to DA7
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
Register name
Register name
Register name
SELECT1
P14OUT
SECAM
BCOL1
BCOL0
CBOFF
HALF
LINS
VCO
LIN5
LIN4
LIN3
LIN2
LIN1
LIN0
SEL
SEL
IOS
INT
—
—
—
—
—
—
—
—
—
State
State
State
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
1
1
1
1
0
0
0
0
1
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Second byte identification code
Normal mode
Half internal synchronous mode
Half tone output
High output in internal synchronous mode
In SECAM mode, only the character frame area is on.
In SECAM mode, the entire character display area is on.
Sets the mode setting pin to be an input pin.
Sets the mode setting pin to be an output pin.
Outputs a color burst signal.
Stops the output of color burst signals.
The command 7 identification code:
sets display control parameters.
Expansion command 0 identification code
Selects the lower 6 bits (bits 0 to 5)
Selects the upper 6 bits (bits 6 to B)
Second byte identification code
VCO frequency is 14.12 MHz
VCO frequency is 7.07 MHz
Turns off (low) sixth line halftone output.
Turns on (high) sixth line halftone output.
Turns off (low) fifth line halftone output.
Turns on (high) fifth line halftone output.
Turns off (low) fourth line halftone output.
Turns on (high) fourth line halftone output.
Turns off (low) third line halftone output.
Turns on (high) third line halftone output.
Turns off (low) second line halftone output.
Turns on (high) second line halftone output.
Turns off (low) first line halftone output.
Turns on (high) first line halftone output.
BCOL1
0
0
1
1
BCOL0
LC74761, 74761M
0
1
0
1
Register content
Register content
Register content
Function
Function
Function
Background color displayed
No background color (about 13 IRE)
No background color (about 23 IRE)
CV
outmt2
(CSYNC)
Background color
Selects P14 (3.58/4.43) output.
Selects the CVCR “on” period.
Switches the input/output direction of
the mode setting pins.
Determines whether a background color
is displayed. (Only valid in internal
synchronization mode.)
Only valid when either BCOL0 is 1 or
BCOL1 is 1.
Selects the upper or lower six bits when
halftone output line mode is specified.
Selects VCO oscillation frequency.
Used for the line 12 setting when LINS
is high.
Used for the line 11 setting when LINS
is high.
Used for the line 10 setting when LINS
is high.
Used for the line 9 setting when LINS is
high.
Used for the line 8 setting when LINS is
high.
Used for the line 7 setting when LINS is
high.
Note
Note
Note
No. 4846-12/20